My vote for easiest has to be 'hugh the mungous' my N. bical which just several months after an accidental decapitation has produced new leaves twice the size than before, now about 18" each making a 36" wide plant! This poor plant had been through he ell before I got it and then the terrarium lid falling on it and he still grows like a runaway freight train! It does get a bi-weekly urea free orchid food & crickets though...
Of course theN. x Ventrata is also like a rocketship with a full new leaf and pitcher every 1 - 2 weeks.
The slowest nep (in my collection so far) is N. lowii. It has made 3 leaves since I got it in June and the tendrils simply bury themselves in sphagnum and refuse to form (despite all other highland neps producing great pitchers).
Naughty lowii! [img]http://www.**********.com/iB_html/non-cgi/emoticons/mad.gif[/img] * * *[img]http://www.**********.com/iB_html/non-cgi/emoticons/biggrin.gif[/img]